Johan van Ravenhorst


Johan van Ravenhorst


PhD Project:

Simulation and optimization of the circular braiding process


University of Twente

Faculty of Engineering Technology

Chair of Production Technology

P.O. Box 217

7500 AE Enschede

The Netherlands

P +31 (0)6-16098368


Start / End:

October 2010 to end 2016

Publication List


Eurocarbon logo


This project aims to develop software for fast simulation and optimization of braiding process parameters for a given laminate plan. The software can reduce lead-time and cost related to engineering, physical testing and over-dimensioning. Moreover, it can be used to assess ‘what-if’ scenarios and derive new design rules.


Circular braiding is a fast and reproducible manufacturing process to produce composite preforms. Preforms are usually impregnated with resin transfer moulding in the case of a thermoset matrix or consolidated with heat and pressure when using commingled thermoplastic yarns. Biaxial and triaxial braids can be produced for optimum load transfer while minimizing weight. Braiding is suited for automated series production of complex shapes with low material waste.

Eurocarbon 96er Exhaust [10317] - small

Circular braiding machine

Braidsim features (click to enlarge)


Braidsim examples (click to enlarge)


Examples of applications:

•frame structures

•landing gear and suspension


•pressure vessels


Braiding software ‘Braidsim’ is under development for use without the need for a specific CAE platform and offers institutes and industry features to:

•assess if braiding is the right production process,

•explore scenarios in early stages of structural design,

•select the right machine,

•train machine operators,

•fully visualize the process in 3D,

•generate braiding machine CNC code,

•generate composite FEA input data,

•predict the component fiber orientation and thickness,

•optimise machine settings for a prescribed fibre distribution

Braidsim logo v6

Currently, Braidsim is in beta phase and is intended for commercial release. However, it is well-documented and sufficiently stable for practical use. Feel free to contact us for further information regarding R&D projects and licensing.

Example simulations:




Rocket nozzle


Circular aircraft frame

Previous work:

Previous work of Blasimir Villa Rodriguez.

Related literature:

Ravenhorst, J.H. van and Akkerman, R., A spool pattern tool for circular braiding, Proc. of ICCM18, Jeju, South Korea, 2011

Akkerman, R. and Rodriguez, B.H., Braiding simulation and slip evaluation for arbitrary mandrel, ESAFORM-10, 2007, AIP Conference Proc. Vol. 907, p.1074-1079

Akkerman, R. and Rodriguez, B.H., Braiding simulation for RTM preforms, Proc. of TEXCOMP-8, Nottingham, 2006

Kessels, J.F.A. and Akkerman, R., Prediction of the yarn trajectories on complex braided preforms, Composites A, 33(8), 2002, p. 1073-1081

Related Posters:

Akkerman, R. and Rodriguez, B.H., Braiding simulation for RTM preforms, TEXCOMP-8, Nottingham, 2006